Download or read book The Use of Surface Geophysical Techniques to Detect Fractures in Bedrock written by Mark R. Lewis and published by . This book was released on 1987 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: See journals under US Geological survey. Circular 987.
Download or read book The Use of Surface Geophysical Techniques to Detect Fractures in Bedrock written by Mark R. Lewis and published by . This book was released on 1986 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The use of surface geophysical techniques to detect fractures in bedrock written by Mark R. Lewis and published by . This book was released on 1987 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Use of Surface and Borehole Geophysical Surveys to Determine Fracture Orientation and Other Site Characteristics in Crystalline Bedrock Terrain Millville and Uxbridge Massachusetts written by Bruce P. Hansen and published by . This book was released on 1995 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: ... Describes results of seismic and resistivity surface geophysical surveys that were conducted at 3 sites and borehole radar surveys conducted in 3 wells; directions of fracturing at each site are described; report also includes description of surface radar surveys, and geophysical surveys ...
Download or read book Integrated Use of Surface geophysical Methods to Indicate Subsurface Fractures at Tibbetts Road Barrington New Hampshire written by D. A. Lieblich and published by . This book was released on 1992 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Integrated Use of Surface geophysical Methods to Indicate Subsurface Fractures at Milford New Hampshire written by D. A. Lieblich and published by . This book was released on 1992 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rock Fractures and Fluid Flow written by National Research Council and published by National Academies Press. This book was released on 1996-08-27 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientific understanding of fluid flow in rock fracturesâ€"a process underlying contemporary earth science problems from the search for petroleum to the controversy over nuclear waste storageâ€"has grown significantly in the past 20 years. This volume presents a comprehensive report on the state of the field, with an interdisciplinary viewpoint, case studies of fracture sites, illustrations, conclusions, and research recommendations. The book addresses these questions: How can fractures that are significant hydraulic conductors be identified, located, and characterized? How do flow and transport occur in fracture systems? How can changes in fracture systems be predicted and controlled? Among other topics, the committee provides a geomechanical understanding of fracture formation, reviews methods for detecting subsurface fractures, and looks at the use of hydraulic and tracer tests to investigate fluid flow. The volume examines the state of conceptual and mathematical modeling, and it provides a useful framework for understanding the complexity of fracture changes that occur during fluid pumping and other engineering practices. With a practical and multidisciplinary outlook, this volume will be welcomed by geologists, petroleum geologists, geoengineers, geophysicists, hydrologists, researchers, educators and students in these fields, and public officials involved in geological projects.
Download or read book Application of Surface Geophysics to Detection and Mapping of Mine Subsidence Fractures in Drift and Bedrock written by Philip J. Carpenter and published by . This book was released on 1995 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Geological Survey Circular written by and published by . This book was released on 1933 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characteristics of Fractures in Crystalline Bedrock Determined by Surface and Borehole Geophysical Surveys Eastern Surplus Superfund Site Meddybemps Maine written by Bruce P. Hansen and published by . This book was released on 1999 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Detection of Bedrock Fractures and Joints Beneath Cover written by Muthanna Yousif Yaqoob Aldiney and published by . This book was released on 2018 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research used geophysical methods to detect the presence of sub-vertical failure planes, their direction(s), and their frequency in bedrock beneath soil or glacial drift overburden. Azimuthal measurements using the seismic, electrical resistivity (ER), and electromagnetic conductivity were made to evaluate which techniques might provide the best indication of the bedrock joints, faults, or shear zones. Measurements were made at multiple sites near each of three locations: Jackson, Alpena, and Grand Ledge, Michigan. The first two are former limestone quarries and the third is underlain by sandstone. Seismic measurements began with one or two linear refraction spreads, used to establish thickness of overburden and identify the S waves. The Circular Array Seismic Survey (CASS) was done by placing the 24 geophones around a 10 or 15m radius circle (15 degree intervals), with the shot point in the center, measuring arrival times of the P and S waves. The EM-31 conductivity was used to quickly determine that there were no wires or pipes in or near the survey circle, as well as to profile along the diameters of the circle at 12 different azimuths. Electrical resistivity measurements included linear and azimuthal square arrays. The linear array consisted of expanding 4-electrodes in the fashion used in Schlumberger array, which constitutes a Vertical Electrical Sounding (VES) to determine the resistivity layering and, similar to the linear array in the seismic refraction method, gave a second or independent measure of the depth to bedrock, water table, or other discontinuity when interpreted. The azimuthal square array was used for the resistivity measurements in the same circle of the CASS, with the diagonal of the square being the circle diameter. This array was rotated to 12 unique azimuths at 15° intervals. Reference measurements of the strikes of failure planes were made using a Brunton compass and photographs at adjacent bedrock exposures. Verification of results was done by comparing the geophysical results and the measured strikes and dips of the nearby exposures of the joint systems. Computer software analyses of the results showed coincidence of the tests results with the strike measurements in some areas, whereas others did not. Some of the methods are very sensitive to variations in thickness and water saturation of the overburden. These effects, as well as lateral resistivity gradients in the bedrock and overburden can apparently cause false indications of fracture systems.
Download or read book Use of Surface and Borehole Geophysical Surveys to Determine Fracture Orientation and Other Site Characteristics in Crystalline Bedrock Terrain Millville and Uxbridge Massachusetts written by Bruce P. Hansen and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book BEDROCK FRACTURE ZONE DELINEATION USING MULTICHANNEL ANALYSIS OF SURFACE WAVES IN CARTER PARK BOWLING GREEN OHIO written by Ahmed Alzawad and published by . This book was released on 2012 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three seismic methods were used to delineate bedrock fracture zones in shallow carbonate rock covered by thin glacial overburden in northwest Ohio. Two study areas were investigated in this thesis: the first area is a parking lot at the Wood County Hospital with two sinkholes exposed to the surface, and the second area is Carter Park, which has been reported to have bedrock fracture zones from previous studies using a variety of geophysical techniques. Data were collected using Multi Channel Analysis of Surface Waves (MASW), seismic refraction with linear and radial geophone arrays. The MASW method was developed based on the dispersion of the seismic energy. This method was used to find lateral variation in shear waves velocities, which can be related to differing degrees of fracturing in the bedrock. The seismic refraction and radial arrays were used as to provide independent evidence for the bedrock fracture zones. In Wood County Hospital site, a single sinkhole was located with using multimode inversion of surface waves, which is more sensitive to the fine structures. In Carter Park, the fracture zones were located by finding shear wave velocity heterogeneities. Two fracture zones were mapped each with a bearing of 030o and were confirmed by using both the linear and radial refraction arrays. These fracture zones correspond to those proposed from earlier studies, thus confirming the utility of using MASW for this type of investigation.
Download or read book Use of Airborne Surface and Borehole Geophysical Techniques at Contaminated Sites written by and published by . This book was released on 1993 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Hydrogeology of Fractured Rocks written by B.B.S. Singhal † and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrology is a topical and growing subject, as the earth's water resources become scarcer and more vulnerable. Although more than half the surface area of continents is covered with hard fractured rocks, there has until now been no single book available dealing specifically with fractured rock hydrogeology. This book deals comprehensively with the fundamental principles for understanding these rocks, as well as with exploration techniques and assessment. It also provides in-depth discussion of structural mapping, remote sensing, geophysical exploration, GIS, field hydraulic testing, groundwater quality and contamination, geothermal reservoirs, and resources assessment and management. Hydrogeological aspects of various lithology groups, including crystalline rocks, volcanic rocks, carbonate rocks and clastic formations, are dealt with separately, using and discussing examples from all over the world. Applied Hydrogeology of Fractured Rocks will be an invaluable reference source for postgraduate students, researchers, exploration scientists, and engineers engaged in the field of groundwater development in fractured rock areas.
Download or read book Characterization Modeling Monitoring and Remediation of Fractured Rock written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2021-01-29 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fractured rock is the host or foundation for innumerable engineered structures related to energy, water, waste, and transportation. Characterizing, modeling, and monitoring fractured rock sites is critical to the functioning of those infrastructure, as well as to optimizing resource recovery and contaminant management. Characterization, Modeling, Monitoring, and Remediation of Fractured Rock examines the state of practice and state of art in the characterization of fractured rock and the chemical and biological processes related to subsurface contaminant fate and transport. This report examines new developments, knowledge, and approaches to engineering at fractured rock sites since the publication of the 1996 National Research Council report Rock Fractures and Fluid Flow: Contemporary Understanding and Fluid Flow. Fundamental understanding of the physical nature of fractured rock has changed little since 1996, but many new characterization tools have been developed, and there is now greater appreciation for the importance of chemical and biological processes that can occur in the fractured rock environment. The findings of Characterization, Modeling, Monitoring, and Remediation of Fractured Rock can be applied to all types of engineered infrastructure, but especially to engineered repositories for buried or stored waste and to fractured rock sites that have been contaminated as a result of past disposal or other practices. The recommendations of this report are intended to help the practitioner, researcher, and decision maker take a more interdisciplinary approach to engineering in the fractured rock environment. This report describes how existing tools-some only recently developed-can be used to increase the accuracy and reliability of engineering design and management given the interacting forces of nature. With an interdisciplinary approach, it is possible to conceptualize and model the fractured rock environment with acceptable levels of uncertainty and reliability, and to design systems that maximize remediation and long-term performance. Better scientific understanding could inform regulations, policies, and implementation guidelines related to infrastructure development and operations. The recommendations for research and applications to enhance practice of this book make it a valuable resource for students and practitioners in this field.
Download or read book Characteristics of Fractures in Crystalline Bedrock Determined by Surface and Borehole Geophysical Surveys Eastern Surplus Superfund Site Meddybemps Maine written by Bruce P. Hansen and published by . This book was released on 1999 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
